Attachment for stovepipes.



No. 706,734. Patented Aug. 12, I902.

W. H. ETCHESON & L. R. WITHERELL.

ATTACHMENT FOR STOVEPIPES.

(Application filed Mar. 15, 1901.)

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IVILLIAM II. ETCHESON AND LOREN R. IVITHERELL, OF KNOXVILLE,

ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 706,734, dated'August12,1902. Application filed March 15, 1901. Elerial No. 51,394. (NdmodeL)To all whom) it may concern:

Be it known that We, WILLIAM H. ETCHE- SON and LOREN R. WITHERELL,citizens of the United States, residing at Knoxville, in the county ofKnox and State of Illinois, have invented a new anduseful Attachment forStovepipes, of which the following is a specification.

Our invention relates to, devices for regulating combustion in stovesandanalogous devices; and it consists in an apertured casing having adamper therein adapted to be attached toa stovepipe in communicationtherewith.

In the accompanying drawings, Figure 1 is a perspective view of a stoveand pipe with our invention attached to the latter. Fig. 2 is a centralvertical section, and Fig. 3 is an end elevation, of our device.

Like reference characters refer to similar parts in all the views.

The damper-casingA may be made round, oblong, or in any ornamentaldesign, and con: sists of a rim l3,'clamped by bolts f or otherwisesuitably secured between the end plates E and F, the latter carrying thepipe d or stovepipe-opening communicating with the interior ofthecasing. The bearing a, consisting, preferably, of a bowed strip of sheetmetal attached at its ends to the inner face of the end plate E andprovided with an aperture, forms in conjunction with the apertured endplate E a support for the operatingrod 1) of the damper a, whereby thelatter may be reciprocated between the end plate F and the saidbearing.

The end plate E is provided with a plurality of apertures 11, the totalarea of which is substantially equal to the cross-sectional area of thepipe d, and the bearing 6 serves as a means to limit the movement of thedamper,-so that the latter in its extreme outward position is spacedfrom the said end plateE and cannot close the apertures z therein.

The operation of the device is apparent. When it is desired that thefire in the stove controlled by the apparatus burn freely, the damper Ctis pushed in so as to cover the end of the pipe 01. When it is desiredto check the fire, the damper is pulled out to the'desired distance, andcold air entering the pipe 0 will retard the combustion in the stove inthe well-known manner. It will be seen that in the latter position thedevice will act as a ventilator.

We are aware that ventilating and check dampers of various kinds areold. We therefore do not claim such damper broadly; but

What we do claim, and desire to secure by Letters Patent, is-

In a damper, the combination of a dampercasing having substantiallyparallel end plates, one of which: is provided with apertures orperforations and with an offset bearing on its inner face, a pipe openat both ends extending from the other end plate and in communicationwith said casing a rod slidaloly mounted in said bearing and end plateand a damper at the end of said rod and at substantially right anglesthereto adapted to close the end of said pipe.

WILLIAM H. ETCI-IESON. LOREN R. WITHERELL. Witnesses:

FRANK PETERSON,

A. L. WAEEEL.

